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Galvanically Isolated Serial I/O Module Supporting RS232/RS422/RS485

The IO505 I/O module is a galvanically isolated 4-channel, RS232-, RS422- and RS485-capable asynchronous serial module with Simulink® driver blocks.

The serial channels offer the highest flexibility as they are individually programmable. The maximum supported baud rate for RS232 is 921.6 kbps and 5.5296 Mbps for RS422/RS485. The termination is software-selectable for RS422 and RS485.

This I/O module is ideal for closed-loop controls and hardware-in-the-loop (HIL) simulations using MATLAB® and Simulink.

  • 4 channels individually programmable as RS232, RS422 or RS485 (half and full duplex)
  • RS232 baud rate up to 921.6 kbps
  • RS422/RS485 baud rate up to 5.5296 Mbps
  • Software-selectable termination (120 Ω)
  • 64-byte hardware FIFO
Form factor PMC
Power requirements 200 mA typical @ +5V DC (Shutdown, no load)
235 mA typical @ +5V DC (RS232, no load)
270 mA typical @ +5V DC (RS422, no load)
700 mA typical @ +5V DC (RS485 FD Master, no load)
285 mA typical @ +5V DC (RS485 HD, no load)
Electrical interface 32 bit/33 MHz, Revision 2.3 compliant
Connectors 50-pin male SCSI2
Operating temperature -40 ºC to +85 ºC
Relative humidity 5 to 95 %, non-condensing
Number of channels 4
Physical interface Software-selectable RS232, RS422, RS485 (half and full duplex)
Programmable baud rates RS232: up to 921.6 kbps
RS422/RS485: up to 5.5296 Mbps
I/O signals RS232: TxD, RxD, RTS, CTS, GND
RS422/RS485 half-duplex: Dx+/-, GND
RS422/RS485 full-duplex: TxD+/-, RxD+/-, GND
Termination Software-selectable 120 Ω
Protection ±15kV ESD rating
Mean time between failures (MTBF)* 694,000 hours
MTBF (Mean Time Between Failure) - MTBF values shown are based on calculation according to MIL-HDBK-217F and MIL-HDBK-217F Notice 2; Environment: GB 20°C. The MTBF calculation is based on component FIT rates provided by the component suppliers. If FIT rates are not available, MIL-HDBK-217F and MIL-HDBK-217F Notice 2 formulas are used for the FIT rate calculation.
Item ID Product Name Components
20505X* IO505
  • 1 x IO505 I/O module
  • 1x 50-pin male SCSI2 to 50-pin male MDR cable, (6 ft/1.82 m)
  • 1x 50-Pin Female MDR Terminal Board
  • Driver block library for Simulink Real-Time™
  • Comprehensive documentation and Simulink example models
  • Installation into real-time target machine

Key to X in Item ID
Please replace the X with the code number of the specific target machine into which this I/O module will be installed:

  • 5 = Mobile real-time target machine
  • 6 = Performance real-time target machine
  • 8 = Baseline real-time target machine

Pricing information
We do not publish pricing information on our website. Upon request by e-mail or phone, we can provide a complete price list covering our entire product portfolio in various currencies. We recommend that you contact us to discuss your specific needs. We can then quickly provide you with a tailored quotation including technical and pricing information.

IO505: 4-Port Serial I/O Module

Included in the Delivery

Common Applications

Supported target machines


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